Type-writing machine.



UNITED STATES PrYIlEN'I ()FFICE. EDWARD F. KUNATH, OF JERSEY CITY, New JERSEY, sioron ro UNDER-- WOOD TYPEWRITER COMPANY, OF NEW YORK, A CORPORATION or NEW JERSE 'rYPE-wnnme. MACHINE..

Patented Feb. 26, 1907; 4

Application filed October 27, 1905. Serial lie-284,690.

1'0 all-'u lwnv it may cancer-n:

' Be it known that I, EDWARD F. KUNATH, a

citizen oft-he United States, residlng'in Jersey City, in the county of'hudson and State of New Jersey, have invented certain new. E

and useful Improvements .in Type-Writing Machines, of which the following is a specihcation.

This invention relates to the platen-scales l l i l l l of type-writing machines, and especially to those in which thewriting is always in sight to adjust the paper upon the platen. In

order to facilitate the adjustment of the paper, the usual pressure-rolls which run upon the platen are cast oil' by means of a releasekey. I contrive to connect the platen-scale to the release-key. so that when the latter is operated to free the paper the scale is brought exactly to the writing-line, whereby the paper may be accurately adjusted, and when i the pressure-rolls are restored to working p0- .sitions the scale is moved away from the writingdine, so that it-maynot be struck by the types. j

In the accompanying drawings, Figure 1 is a perspective view of the carriage of the wellknown front-strike Underwood tripe-writingmachine, showing my improvements applied thereto, the scale being depressed below the writing-line, so asto be out of the way of the types. Fig. 12- is a side elevation showing the pressure-rolls released and the scale Fig. 8 illustrates raised to the writing-line.

the manner in which the pressure-rolls are 0 icallv till the operator hits thekey 15.

is cll'cctcd by a. rock-shaft 9, extending along the platen and jonrnalcd in 'Iixcd brackets Hi, depending from a rod H, wh ch connects said Said rock-sha h J has a crankend plates 2-.

The release of rho Hills E arm 12, connected by alink 13 to a lever 14', mounted-upon the platen-frame and having a finger-piece 15. When the finger-piece is depressed, the link 13 is raised and the shaft 9 rocked, cams 16,. formed upon said rockshaft, acting upon arms 17, rigid with the arms 7 8, so that the latter are moved away" i from the platen, thereby releasing the rolls,

Fig. 2. At this time the arms 17 are in contact with cylindrical portions of the shaft 9, as at Fig. 3, thereby mechanically holding the arms 17 in abnormal positions and permitting the operator to use both hands to adjust the paper. Upon said carriage and along the front of the platen I mount a platen-scale 18, from the ends of which depend fixed arms 19, which at their lower ends are hinged to arms 12 and 20 upon a rocka shaft- 9.- Said scale is normally far enough below the writing-line, as at Fig. 1, to clear the types; but when said shaft 9 is rocked by the finger-piece 15 the arms IZ 20 lift the scale until it coincides with the writ ing-linc, as at Fig. 2. Since the shaft- 9 will remain in this pos-tion without further attention, as at Fig. 3, the operator can use both hands to adjust the paper to the scale. Ircfera bly sprin s 21, acting upon the arms 19, press the scale lightly against the platen so as to hold the paper where adjusted until the operator lifts the key 15, thereby bringing the rolls 3 4 into play, such movement, of course, causing the scale to drop to the normal position at Fig. 1.

Variations may be resorted to within the scope of the invention. and portions of my improvements may be used without othersas, for instance, the arms 7 and the rolls 3-4 may be omitted, whcrchv the remainder of the mechanism will serve not only to move the scale up in front of the platen to the writingdinc, but also to hold it there mechan- 10 ing a rock-shaft extending along the "platen nation with aplaten, of a setof pressure-rolls, I said rock-shalt, press'tire-rolls running upon a pressure-r ll-releasing mechanism including a rock-shaft extending along the platen and having arms, and a scale having at its ends arms which are hinged to said rockarms. 3. In a ty}:)e-Writin machine, the combination with a platen, 0? a setof pressure-rolls, a pressure-roll-releasing mechanism includand having arms, and a scale having at its end arms which are hinged to said rock-arms, and springs at the ends of said scale for pressing the same toward the platen.

4. In a type-Writing machine, the combination of a. platen, a scale, a rock-shaft. extending along the platen and connected at its 1 ends to said scale, to move the same perpendicularly of its len th toward and from the printing-point, a gar-piece for operating the platen, and means to enable said rockshaft to release said rolls concomitantly with the movement 01' said scale toward the printing-point.

5. In a type-writing machine, the combination with a platen, of a scale, a rock-shaft extending along the platen and connected at its ends to said scale, to move the same per- :endieula-r v of its lerwth toward and from the printing-point, a finger-piece for operating said rock-shaft, and pressure-rolls released by said rock-shaft; means being providezi for mechanically,detaining the scale in elevatedposition and the rolls in released pcsitions.

EDWARD F. KUXAT H.

'itnesses: I

1 B; C. STICKNEY,

H. ANDREWS. 

